[Healeys] BJ8 tach disassembly

Tom ah3000me at gmail.com
Tue Mar 5 19:09:26 MST 2019


Michael, Mike, Steve,

Thanks for your comments!

Quick question...   can a solvent damage the face?    I think I'd be better
off damaging the glass than damaging the face.

- Tom


On Tue, Mar 5, 2019 at 7:42 PM BJ8Healeys <sbyers at ec.rr.com> wrote:

> I dribbled a solvent sparingly (acetone or 3M adhesive remover, I forget
> which -- or maybe both) around the edges of the glass.  Eventually the bond
> released.
>
>
>
> Steve Byers
>
> HBJ8L/36666
>
> BJ8 Registry
>
> AHCA Delegate at Large
>
> Havelock, NC
>
>
>
>
>
> *From:* Healeys [mailto:healeys-bounces at autox.team.net] *On Behalf Of *Michael
> Salter
> *Sent:* Tuesday, March 05, 2019 3:48 PM
> *To:* Tom
> *Cc:* Healey Mail List
> *Subject:* Re: [Healeys] BJ8 tach disassembly
>
>
>
> Hi Tom,
>
> What you have encountered is not uncommon. The manufacturers seemed to use
> an adhesive of some sort to secure the rim and the glass in position and it
> dries out and becomes very hard.
>
> I would recommend putting the 2 small screws back in as the mechanism does
> not have to come out at this stage.
>
> You have to very gently pry the glass and inner rim, which is under the
> glass to get it out.
>
> You need to get a blade under the edge of the inner rim to avoid chipping
> the glass.
>
> As I recall there is a slot in the case that you can use as a starting
> point.
>
> Take your time and gently work away at it ... it will move eventually.
>
>
>
> M
>
>
>
> On Wed, Mar 6, 2019 at 9:15 AM Tom <ah3000me at gmail.com> wrote:
>
> Hi everyone,
>
>
>
> I have some white dust inside the BJ8 tach that I'd like to clean up.    I
> found disassembly instruction on John Simm's site.  After removing the trim
> ring, and undoing the two screws holding the mechanism to the case, the
> glass face is firmly stuck to the case.
>
>
>
> If I can pop the glass face off, I can easily clean it with a can of
> compressed air.  But the glass face is stuck, and I don't want to break
> something.   Anyone have any ideas how to do this?
>
>
>
> thanks again,
>
>
>
> Tom
>
>
>
>
>
>
>
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